Document not saving after finding and modifying in Mongoose - node.js

Question

I have a route to remove a team and all requests to join that specific team, which is nested in a JoinTeamRequests array in the UserProfiles. The idea is to remove all traces of invites to that team once it has been deleted. I am using the MEAN stack. I am still new at this so any other advice or suggestions would be great.
here is my route:
//Remove a specific team
.delete (function (req, res) {
//Delete the team - works
TeamProfile.remove({
_id : req.body.TeamID
}, function (err, draft) {
if (err)
res.send(err);
});
UserProfile.find(
function (err, allProfiles) {
for (var i in allProfiles) {
for (var x in allProfiles[i].JoinTeamRequests) {
if (allProfiles[i].JoinTeamRequests[x].TeamID == req.body.TeamID) {
allProfiles[i].JoinTeamRequests.splice(x, 1);
console.log(allProfiles[i]); //logs the correct profile and is modified
}
}
}
}).exec(function (err, allProfiles) {
allProfiles.save(function (err) { //error thrown here
if (err)
res.send(err);
res.json({
message : 'Team Successfully deleted'
});
});
});
});
However, I get an error: TypeError: allProfiles.save is not a function.
Why is it throwing this error?

Answer 1

First of all it is more common to perform search in next form:
UserProfile.find({'JoinTeamRequests.TeamID': req.body.TeamID})
Secondly, after execution you have to check if returned array is not empty:
if(allProfiles && allProfiles.length) {
}
I think it could be possible to execute this in one statement, but for now, try the next chunk of code:
UserProfile.find({'JoinTeamRequests.TeamID': req.body.TeamID}).exec(function (err, users) {
if(err) {
return res.end(err);
}
if(users && users.length) {
users.forEach(function(user) {
user.JoinTeamRequests.remove(req.body.TeamID);
user.save(function(err) {
if(err) {
return res.end(err);
}
})
});
}
});